Sperm cells and egg cells are formed by what?

when the age of puberty , you will have that when the right time

Blah!

From the age of puberty onwards, males continue to produce sperm in the testes throughout their lives. Females, however, are born with all the eggs they will ever produce and are released generally once per monthly cycle. For the exact formation of each, you will need to grab a biochemistry textbook. But I bet it's not as exciting as liver functions!